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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-16703) Explore object pooling of SeekerState
Date Mon, 26 Sep 2016 05:18:20 GMT

     [ https://issues.apache.org/jira/browse/HBASE-16703?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Andrew Purtell updated HBASE-16703:
-----------------------------------
    Description: In read workloads 35% of the allocation pressure produced by servicing RPC
requests, when block encoding is enabled, comes from BufferedDataBlockEncoder$SeekerState.<init>,
where we allocate two byte arrays of INITIAL_KEY_BUFFER_SIZE in length. There's an opportunity
for object pooling of SeekerState here. Subsequent code checks if those byte arrays are sized
sufficiently to handle incoming data to copy. The arrays will be resized if needed.   (was:
In read workloads 35% of the allocation pressure produced by servicing RPC requests, when
block encoding is enabled, comes from SeekerState.<init> of the DataBlockEncoder implementation
currently in use, where we allocate two byte arrays of INITIAL_KEY_BUFFER_SIZE in length.
There's an opportunity for object pooling of SeekerState here. Subsequent code checks if those
byte arrays are sized sufficiently to handle incoming data to copy. The arrays will be resized
if needed. )

> Explore object pooling of SeekerState
> -------------------------------------
>
>                 Key: HBASE-16703
>                 URL: https://issues.apache.org/jira/browse/HBASE-16703
>             Project: HBase
>          Issue Type: Task
>            Reporter: Andrew Purtell
>
> In read workloads 35% of the allocation pressure produced by servicing RPC requests,
when block encoding is enabled, comes from BufferedDataBlockEncoder$SeekerState.<init>,
where we allocate two byte arrays of INITIAL_KEY_BUFFER_SIZE in length. There's an opportunity
for object pooling of SeekerState here. Subsequent code checks if those byte arrays are sized
sufficiently to handle incoming data to copy. The arrays will be resized if needed. 



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